Finding the Fourth Proportional to 397,405.76, 548,430.24 and 216,128.96
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Solution
The fourth proportional to 397,405.76, 548,430.24 and 216,128.96 is: 298,263.56
Step by Step Solution
- Step 1: Write the proportion equation
397,405.76 : 548,430.24 = 216,128.96 : x - Step 2: Convert to fraction form
397,405.76/548,430.24 = 216,128.96/x - Step 3: Cross multiply
397,405.76x = 548,430.24 × 216,128.96 - Step 4: Simplify right side
397,405.76x = 118,531,657,403.75 - Step 5: Solve for x
x = 118,531,657,403.75/397,405.76 - Step 6: Final answer
x = 298,263.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.